CHEMICAL TREATMENTS :
Phosphating, electroless nickel plating, chemical conversion coatings
Conversion and surface conditioning that boost adhesion and corrosion resistance The chemical treatment of metals, also known as surface chemical treatment, is an essential industrial process designed to enhance corrosion protection and paint adhesion on all types of metal components.
At Electropoli, we offer advanced chemical treatment services combining technical performance, process reliability, and environmental responsibility
Operation – Description of the process
Our automated chemical lines guarantee precision through strict process control, continuous bath analysis, and rigorous quality monitoring.
Using rack and barrel chemical treatments, we adapt to all part geometries and production volumes while ensuring full compliance with chemical treatment quality standards.
Range of CHEMICAL TREATMENTS
Electropoli offers a wide range of surface chemical treatments and conversion coatings:
- High phosphorus electroless nickel
- Medium phosphorus electroless nickel
- Electroless Nickel PTFE (EN-PTFE)
- Phospatation Zn et ZnCa
Why choose Our CHEMICAL TREATMENTS ?
Improve adhesion, corrosion resistance, and surface preparation before other processes.
A strategic choice to optimize the overall performance of the metal.
Looking for a specific service
For your chemical treatments, our technical teams can design tailor-made services adapted to your performance and compliance needs.
Access our customized electrolytic coating solutions.
Need technical support
Are you developing a new component, validating specifications, or facing a technical challenge?
Our chemical treatment experts are at your disposal to study your needs and create the right chemical treatment solution.
OUR OTHER TREATMENTS
Painting
Aluminum passivation
Multi treatments
Finishing
FAQ
What are the key differences between high phosphorus electroless nickel (ENP) and medium phosphorus ENP in terms of corrosion resistance, wear resistance, and hardness ? Which is better for my specific application ?
High-phosphorus electroless nickel (High-P ENP) offers excellent corrosion resistance and very good chemical stability. It is particularly suitable for aggressive environments and applications requiring uniform protection, especially on complex geometries.
Medium-phosphorus electroless nickel (Medium-P ENP) offers a good compromise between corrosion resistance, hardness and wear resistance. It is often preferred for mechanical or functional applications where wear resistance is a key criterion.
The choice between High-P and Medium-P ENP therefore depends on the exposure conditions, mechanical stresses and functional requirements of the application. The final specification is defined according to customer needs and expected performance.
How does electroless nickel PTFE (EN-PTFE) coating improve lubricity and reduce friction compared to standard electroless nickel, and what are its typical applications in industrial machinery or automotive components?
EN-PTFE coating combines the properties of electroless nickel with PTFE particles integrated into the deposit. This combination significantly reduces the coefficient of friction and improves self-lubricating properties compared to standard electroless nickel.
It reduces wear, seizing and the need for external lubrication, while maintaining good corrosion resistance. EN-PTFE is commonly used for components subject to repetitive movements or friction, such as industrial machine parts, automotive mechanisms or functional elements requiring controlled sliding.
The choice of this coating depends on the tribological constraints, the environment of use and the functional requirements of the application.
What are the main benefits of zinc phosphating or zinc calcium phosphating as a pretreatment before painting or powder coating on steel parts? Does it improve paint adhesion and corrosion protection?
Zinc or zinc-calcium phosphating is a widely used pre-treatment to improve paint adhesion and enhance the corrosion protection of steel parts.
It creates a uniform conversion layer that promotes the anchoring of paint or powder coating and limits the spread of corrosion under the film. Zinc-calcium phosphating is often preferred for increased durability, mechanical strength and as an undercoat for subsequent rubber bonding.
The choice of phosphating type depends on the exposure conditions, the paint system applied and customer specifications.
Can your electroless nickel plating (ENP) process provide a uniform coating thickness even on complex shaped parts with internal bores or recessed areas, and what thickness ranges can you typically achieve?
Yes. Electroless nickel plating (ENP) produces a very uniform coating thickness, even on parts with complex geometries, internal bores and hard-to-reach areas.
Thanks to its autocatalytic deposition principle, ENP ensures a homogeneous distribution of the coating, regardless of the geometry. The thickness ranges are defined and controlled according to functional requirements and customer specifications.
What industry standards (e.g., ASTM B733 for electroless nickel, TT-C-490 or ASTM F1137 for phosphating) do your chemical treatment services comply with, and what quality control measures are in place?
Our chemical treatments are carried out in accordance with the main applicable international standards, such as ASTM B733 for chemical nickel, and associated customer specifications.
Compliance is ensured by quality controls throughout the process, including monitoring of treatment parameters, thickness checks and, where required, adhesion or performance tests. All of this is part of a quality framework that guarantees the traceability and reproducibility of results.
